Device for recognizing defects in finished surface of product

Abstract

A device to detect and analyze defects in magnified scale images of a surface of a finished product illuminated with a blue light source and viewed by multiple image-capturing devices each focused on their own spot includes a supporting mechanism, a transmitting mechanism, a detecting mechanism, and a processor. The transmitting mechanism carries and transmits the product. The detecting mechanism includes a detecting frame, a blue light source assembly. The processor is used to connect to a camera assembly, and preprocess the image of the front of the product to obtain a detection and analysis of any defects of the front of the product.

What is claimed is: 
     
       1. A detecting device configured for detecting a surface of a product, the detecting device comprising:
 a supporting mechanism; 
 a transmitting mechanism carrying and transmitting the product; wherein an upward side of the product is a front of the product; 
 a detecting mechanism comprising a detecting frame, a blue light source, and a camera assembly, and wherein the detecting frame is arranged on the supporting mechanism to move along a first direction and a second direction perpendicular to the first direction, the blue light source is connected to the detecting frame; the blue light source emits light perpendicular to a front of the product and projected on the front of the product, the camera assembly comprises a plurality of camera members, and the camera members are arranged along the second direction; wherein an image capturing direction of the camera members are perpendicular to the front of the product, and the camera assembly obtains an image of the front of the product when the blue light source is projecting light; and 
 a processor connecting to the camera assembly and preprocessing the image captured by the camera assembly, the processor obtaining a detection result of the image. 
 
     
     
       2. The detecting device of  claim 1 , wherein:
 each of the camera members is fixed focus with a focal length ranges from 6 mm to 12 mm. 
 
     
     
       3. The detecting device of  claim 1 , wherein:
 exposure of the plurality of the camera members are the same, and an exposure range of each of the camera members is between 4000 μs and 5000 μs. 
 
     
     
       4. The detecting device of  claim 1 , wherein:
 brightness range of the blue light source is from 7800 lm to 8200 lm. 
 
     
     
       5. The detecting device of  claim 1 , wherein:
 the detecting device is adjustable to satisfy a relationship of H 1 =(0.4˜0.9)*[(a+b)/2]; 
 wherein H 1  is a distance from the blue light source to the front of the product, a is a length of the product, and b is a width of the product. 
 
     
     
       6. The detecting device of  claim 5 , wherein:
 the detecting device is further adjustable to satisfy the relationship of H 2 =(0.8˜1.7)*[(a+b)/2]; 
 wherein H 2  is a distance from each camera member to the front of the product. 
 
     
     
       7. The detecting device of  claim 1 , wherein:
 the supporting mechanism comprises a supporting platform, a supporting frame, and a moving member, the supporting frame is connected to the supporting platform, the supporting frame comprises a guiding rail, and the guiding rail is parallel to the first direction; the moving member is slidably connected to the guiding rail, and the detecting frame is connecting to the moving member. 
 
     
     
       8. The detecting device of  claim 7 , wherein:
 the transmitting mechanism comprises a transmitting bracket and a transmitting belt, and the transmitting bracket is arranged on the supporting platform and is located between two gantry carriages, the transmitting belt is arranged on the transmitting bracket, and the transmitting belt is configured to carry and move the product in the first direction. 
 
     
     
       9. The detecting device of  claim 8 , wherein:
 the detecting frame comprises a first detecting rack and a second detecting rack; the first detecting rack is connected to the moving member, and the camera members are connected to the first detecting rack, the second detecting rack is slidably connected to the first detecting rack along the third direction, the blue light source is arranged on the second detecting rack, and the third direction, the first direction and the second direction are perpendicular to each other. 
 
     
     
       10. The detecting device of  claim 9 , wherein:
 the first detecting rack comprises a first detecting rod, a detecting track and an adjusting member, the first detecting rod is connected to the moving member, the detecting track is connected to the first detecting rod, an extension direction of the detecting track is parallel to the third direction, a first end of the adjusting member is slidably connected to the detecting track, a second end of the adjusting member is connected to the camera members; wherein the adjusting member comprises three adjusting blocks, and each of the three adjusting blocks is connected to a corresponding one of the plurality of camera members. 
 
     
     
       11. A detecting device configured for detecting a surface of a product, the detecting device comprising:
 a supporting mechanism; 
 a transmitting mechanism carrying and transmitting the product; wherein an upward side of the product is a front of the product; 
 a detecting mechanism comprising a detecting frame, a blue light source, and a camera assembly, and wherein the detecting frame is arranged on the supporting mechanism to move along a first direction and a second direction perpendicular to the first direction, the blue light source is connected to the detecting frame; the blue light source emits light perpendicular to a front of the product and projected on the front of the product, the camera assembly comprises a plurality of camera members, and the camera members are arranged along the second direction; wherein an image capturing direction of the camera members are perpendicular to the front of the product, and the camera assembly obtains an image of the front of the product when the blue light source is projecting light; and 
 a processor connecting to the camera assembly and preprocessing the image captured by the camera assembly, the processor obtaining a detection result of the image; 
 wherein the supporting mechanism comprises a supporting platform, a supporting frame, and a moving member, the supporting frame is connected to the supporting platform, the supporting frame comprises a guiding rail, and the guiding rail is parallel to the first direction; the moving member is slidably connected to the guiding rail, and the detecting frame is connecting to the moving member; 
 wherein each of the plurality of the camera members has a same exposure. 
 
     
     
       12. The detecting device of  claim 11 , wherein:
 each of the camera members is fixed focus with a focal length ranges from 6 mm to 12 mm. 
 
     
     
       13. The detecting device of  claim 11 , wherein:
 brightness range of the blue light source is from 7800 lm to 8200 lm. 
 
     
     
       14. The detecting device of  claim 11 , wherein:
 the detecting device is adjustable to satisfy a relationship of H 1 =(0.4˜0.9)*[(a+b)/2]; 
 wherein H 1  is a distance from the blue light source to the front of the product, a is a length of the product, and b is a width of the product. 
 
     
     
       15. The detecting device of  claim 11 , wherein:
 the detecting device is further adjustable to satisfy the relationship of H 2 =(0.8˜1.7)*[(a+b)/2]; 
 wherein H 2  is a distance from each camera member to the front of the product. 
 
     
     
       16. The detecting device of  claim 11 , wherein:
 the transmitting mechanism comprises a transmitting bracket and a transmitting belt, and the transmitting bracket is arranged on the supporting platform and is located between two gantry carriages, the transmitting belt is arranged on the transmitting bracket, and the transmitting belt is configured to carry and move the product in the first direction. 
 
     
     
       17. The detecting device of  claim 16 , wherein:
 the detecting frame comprises a first detecting rack and a second detecting rack; the first detecting rack is connected to the moving member, and the camera members are connected to the first detecting rack, the second detecting rack is slidably connected to the first detecting rack along the third direction, the blue light source is arranged on the second detecting rack, and the third direction, the first direction and the second direction are perpendicular to each other. 
 
     
     
       18. The detecting device of  claim 17 , wherein:
 the first detecting rack comprises a first detecting rod, a detecting track and an adjusting member, the first detecting rod is connected to the moving member, the detecting track is connected to the first detecting rod, an extension direction of the detecting track is parallel to the third direction, a first end of the adjusting member is slidably connected to the detecting track, a second end of the adjusting member is connected to the camera members; wherein the adjusting member comprises three adjusting blocks, and each of the three adjusting blocks is connected to a corresponding one of the plurality of camera members.